Searching for Raku and Nigul

I am looking for any relatives (or anyone with information about the family) of Anthon Raku who left Estonia on his uncle's boat in 1912. I am his grandaughter.

His relatives are (I think) Father: Yuri or Georg Raku, Mother: Tio Nigul and his brothers were: Karl Raku, Kristian, Valdimar with a sister, Anna. I believe he would have been born and lived in Parnu about 1896 - and his father was a flour miller.